add option to return a promise from a component workflow

Add the option to return a promise, and subsequently a response, from a component workflow.

I like the ability to have a callback URL to pass data back. But often, component workflows run very very quickly. Why not allow us to return a promise / response as an option rather than the callback architecture (which requires us to host a backend to use this outside of the nintex platform).

This would allow us to create component workflows that behave as web services which could be called from custom front end applications (adding another potential reason for purchasing the nintex platform).

It would also open the possibility to call a component workflow from a nintex form custom extension. That could open a whole new level of interaction capabilities in our forms.